Patent · US Active

Method of absolute phase calibration as well as calibration system

US11280871B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignee

Rohde & Schwarz GmbH & Co. KG · DE

Inventors

Werner Held · Pöcking, DE
Jan-Patrick Schultheis · Munich, DE
Jakob Hammer · Munich, DE

Key dates

Filing date	Dec 12, 2019
Grant date	Mar 22, 2022
Priority date	—
Expiry date	Feb 3, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/3191
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method of absolute phase calibration of at least a first port of a test and measurement equipment, comprising: providing the test and measurement equipment having the first port to be calibrated; providing a calibration mixer having a first port, a second port and a local oscillator port; providing at least one phase reproducible source that outputs a local oscillator signal; and performing at least two UOSM measurements at the first port of the test and measurement equipment, wherein at least one of the at least two UOSM measurements is performed with a frequency shift from a first frequency to a second frequency by using the calibration mixer. Furthermore, a calibration system is described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.